The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2002
Filed:
Jul. 14, 2000
Blood pressure determining apparatus and method of determining excitation frequency used in the same
Hisashi Hagiwara, Yokohama, JP;
Hiroshi Fukukita, Tokyo, JP;
Kinya Hasegawa, Sagamihara, JP;
Yushi Nishimura, Yokohama, JP;
Abstract
A blood pressure determining apparatus is provided which applies oscillations to the blood vessel of a subject through an exciter to determine the blood pressure based on the frequency of the oscillations propagated through the blood vessel measured by an oscillation sensor. The apparatus monitors an output of the oscillation sensor when the exciter applies no oscillation to the subject to determine the power spectrum of noise signals contained in the output and sets the frequency of oscillations to be applied to the blood vessel to any value within a band of the power spectrum in which the power of noise is small. This enables the blood pressure to be determined without influence of any electric disturbances from peripheral devices.